Center for Research in Health Behavior, Virginia Tech, USA.
J Health Psychol. 1997 Apr;2(2):209-23. doi: 10.1177/135910539700200217.
A randomized-control test of a multimedia nutrition intervention-the Nutrition for a Lifetime System (NLS©)- utilized supermarket receipts to examine effects of NLS treatment on the daily per person nutritional content of participants' supermarket purchases. In regression analyses controlling for background variables, baseline purchases and trends toward increased purchasing, NLS treatment contributed to lower levels of total fat and to higher levels of total fiber and servings of fruits and vegetables at post-test. Redemption of NLS coupons contributed to greater decreases in fat and increases in servings of fruits and vegetables in users' purchases. Implications for future interventions promoting healthier food choices include tailoring program content and addressing broader lifestyle issues such as caloric intake and expenditure.
一项多媒体营养干预措施——终生营养系统（NLS©）的随机对照试验，利用超市收据来检验 NLS 治疗对参与者超市购买的日常个人营养成分的影响。在回归分析中控制背景变量、基线购买量和购买量增加的趋势后，NLS 治疗有助于降低总脂肪含量，增加总纤维和水果及蔬菜的摄入量。NLS 优惠券的兑换有助于减少使用者购买的脂肪量，并增加水果和蔬菜的摄入量。未来促进更健康食物选择的干预措施的意义包括调整项目内容和解决更广泛的生活方式问题，如卡路里的摄入和消耗。
